1

/* $Id$ */

     2

     3

/** @file win32.cpp Implementation of MS Windows system calls */

     4

     5

#include "stdafx.h"

     6

#include "openttd.h"

     7

#include "debug.h"

     8

#include "saveload.h"

     9

#include "gfx_func.h"

    10

#include "textbuf_gui.h"

    11

#include "fileio.h"

    12

#include "rev.h"

    13

#include <windows.h>

    14

#include <winnt.h>

    15

#include <wininet.h>

    16

#include <io.h>

    17

#include <fcntl.h>

    18

#include <shlobj.h> // SHGetFolderPath

    19

#include "variables.h"

    20

#include "win32.h"

    21

#include "fios.h" // opendir/readdir/closedir

    22

#include "fileio.h"

    23

#include "core/alloc_func.hpp"

    24

#include "functions.h"

    25

#include "core/random_func.hpp"

    26

#include "core/bitmath_func.hpp"

    27

#include "string_func.h"

    28

#include <ctype.h>

    29

#include <tchar.h>

    30

#include <errno.h>

    31

#include <sys/types.h>

    32

#include <sys/stat.h>

    33

#if defined(_MSC_VER) && !defined(WINCE)

    34

	#include <dbghelp.h>

    35

#endif

    36

    37

static bool _has_console;

    38

    39

static bool cursor_visible = true;

    40

    41

bool MyShowCursor(bool show)

    42

{

    43

	if (cursor_visible == show) return show;

    44

    45

	cursor_visible = show;

    46

	ShowCursor(show);

    47

    48

	return !show;

    49

}

    50

    51

/** Helper function needed by dynamically loading libraries

    52

 * XXX: Hurray for MS only having an ANSI GetProcAddress function

    53

 * on normal windows and no Wide version except for in Windows Mobile/CE */

    54

bool LoadLibraryList(Function proc[], const char *dll)

    55

{

    56

	while (*dll != '\0') {

    57

		HMODULE lib;

    58

		lib = LoadLibrary(MB_TO_WIDE(dll));

    59

    60

		if (lib == NULL) return false;

    61

		for (;;) {

    62

			FARPROC p;

    63

    64

			while (*dll++ != '\0') { /* Nothing */ }

    65

			if (*dll == '\0') break;

    66

#if defined(WINCE)

    67

			p = GetProcAddress(lib, MB_TO_WIDE(dll));

    68

#else

    69

			p = GetProcAddress(lib, dll);

    70

#endif

    71

			if (p == NULL) return false;

    72

			*proc++ = (Function)p;

    73

		}

    74

		dll++;

    75

	}

    76

	return true;

    77

}

    78

    79

#ifdef _MSC_VER

    80

static const char *_exception_string = NULL;

    81

void SetExceptionString(const char *s, ...)

    82

{

    83

	va_list va;

    84

	char buf[512];

    85

    86

	va_start(va, s);

    87

	vsnprintf(buf, lengthof(buf), s, va);

    88

	va_end(va);

    89

    90

	_exception_string = strdup(buf);

    91

}

    92

#endif

    93

    94

void ShowOSErrorBox(const char *buf)

    95

{

    96

	MyShowCursor(true);

    97

	MessageBox(GetActiveWindow(), MB_TO_WIDE(buf), _T("Error!"), MB_ICONSTOP);

    98

    99

/* if exception tracker is enabled, we crash here to let the exception handler handle it. */

   100

#if defined(WIN32_EXCEPTION_TRACKER) && !defined(_DEBUG)

   101

	if (*buf == '!') {

   102

		_exception_string = buf;

   103

		*(byte*)0 = 0;

   104

	}

   105

#endif

   106

}

   107

   108

#if defined(_MSC_VER) && !defined(WINCE)

   109

   110

static void *_safe_esp;

   111

static char *_crash_msg;

   112

static bool _expanded;

   113

static bool _did_emerg_save;

   114

static int _ident;

   115

   116

struct DebugFileInfo {

   117

	uint32 size;

   118

	uint32 crc32;

   119

	SYSTEMTIME file_time;

   120

};

   121

   122

static uint32 *_crc_table;

   123

   124

static void MakeCRCTable(uint32 *table)

   125

{

   126

	uint32 crc, poly = 0xEDB88320L;

   127

	int i;

   128

	int j;

   129

   130

	_crc_table = table;

   131

   132

	for (i = 0; i != 256; i++) {

   133

		crc = i;

   134

		for (j = 8; j != 0; j--) {

   135

			crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1);

   136

		}

   137

		table[i] = crc;

   138

	}

   139

}

   140

   141

static uint32 CalcCRC(byte *data, uint size, uint32 crc)

   142

{

   143

	for (; size > 0; size--) {

   144

		crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF];

   145

	}

   146

	return crc;

   147

}

   148

   149

static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename)

   150

{

   151

	HANDLE file;

   152

	memset(dfi, 0, sizeof(dfi));

   153

   154

	file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);

   155

	if (file != INVALID_HANDLE_VALUE) {

   156

		byte buffer[1024];

   157

		DWORD numread;

   158

		uint32 filesize = 0;

   159

		FILETIME write_time;

   160

		uint32 crc = (uint32)-1;

   161

   162

		for (;;) {

   163

			if (ReadFile(file, buffer, sizeof(buffer), &numread, NULL) == 0 || numread == 0)

   164

				break;

   165

			filesize += numread;

   166

			crc = CalcCRC(buffer, numread, crc);

   167

		}

   168

		dfi->size = filesize;

   169

		dfi->crc32 = crc ^ (uint32)-1;

   170

   171

		if (GetFileTime(file, NULL, NULL, &write_time)) {

   172

			FileTimeToSystemTime(&write_time, &dfi->file_time);

   173

		}

   174

		CloseHandle(file);

   175

	}

   176

}

   177

   178

   179

static char *PrintModuleInfo(char *output, HMODULE mod)

   180

{

   181

	TCHAR buffer[MAX_PATH];

   182

	DebugFileInfo dfi;

   183

   184

	GetModuleFileName(mod, buffer, MAX_PATH);

   185

	GetFileInfo(&dfi, buffer);

   186

	output += sprintf(output, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n",

   187

		WIDE_TO_MB(buffer),

   188

		mod,

   189

		dfi.size,

   190

		dfi.crc32,

   191

		dfi.file_time.wYear,

   192

		dfi.file_time.wMonth,

   193

		dfi.file_time.wDay,

   194

		dfi.file_time.wHour,

   195

		dfi.file_time.wMinute,

   196

		dfi.file_time.wSecond

   197

	);

   198

	return output;

   199

}

   200

   201

static char *PrintModuleList(char *output)

   202

{

   203

	BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD);

   204

   205

	if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) {

   206

		HMODULE modules[100];

   207

		DWORD needed;

   208

		BOOL res;

   209

   210

		HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());

   211

		if (proc != NULL) {

   212

			res = EnumProcessModules(proc, modules, sizeof(modules), &needed);

   213

			CloseHandle(proc);

   214

			if (res) {

   215

				size_t count = min(needed / sizeof(HMODULE), lengthof(modules));

   216

   217

				for (size_t i = 0; i != count; i++) output = PrintModuleInfo(output, modules[i]);

   218

				return output;

   219

			}

   220

		}

   221

	}

   222

	output = PrintModuleInfo(output, NULL);

   223

	return output;

   224

}

   225

   226

static const TCHAR _crash_desc[] =

   227

	_T("A serious fault condition occured in the game. The game will shut down.\n")

   228

	_T("Please send the crash information and the crash.dmp file (if any) to the developers.\n")

   229

	_T("This will greatly help debugging. The correct place to do this is http://bugs.openttd.org. ")

   230

	_T("The information contained in the report is displayed below.\n")

   231

	_T("Press \"Emergency save\" to attempt saving the game.");

   232

   233

static const TCHAR _save_succeeded[] =

   234

	_T("Emergency save succeeded.\n")

   235

	_T("Be aware that critical parts of the internal game state may have become ")

   236

	_T("corrupted. The saved game is not guaranteed to work.");

   237

   238

static bool EmergencySave()

   239

{

   240

	SaveOrLoad("crash.sav", SL_SAVE, BASE_DIR);

   241

	return true;

   242

}

   243

   244

/* Disable the crash-save submit code as it's not used */

   245

#if 0

   246

   247

struct WinInetProcs {

   248

	HINTERNET (WINAPI *InternetOpen)(LPCTSTR, DWORD, LPCTSTR, LPCTSTR, DWORD);

   249

	HINTERNET (WINAPI *InternetConnect)(HINTERNET, LPCTSTR, INTERNET_PORT, LPCTSTR, LPCTSTR, DWORD, DWORD, DWORD);

   250

	HINTERNET (WINAPI *HttpOpenRequest)(HINTERNET, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR *, DWORD, DWORD);

   251

	BOOL (WINAPI *HttpSendRequest)(HINTERNET, LPCTSTR, DWORD, LPVOID, DWORD);

   252

	BOOL (WINAPI *InternetCloseHandle)(HINTERNET);

   253

	BOOL (WINAPI *HttpQueryInfo)(HINTERNET, DWORD, LPVOID, LPDWORD, LPDWORD);

   254

};

   255

   256

#define M(x) x "\0"

   257

#if defined(UNICODE)

   258

# define W(x) x "W"

   259

#else

   260

# define W(x) x "A"

   261

#endif

   262

static const char wininet_files[] =

   263

	M("wininet.dll")

   264

	M(W("InternetOpen"))

   265

	M(W("InternetConnect"))

   266

	M(W("HttpOpenRequest"))

   267

	M(W("HttpSendRequest"))

   268

	M("InternetCloseHandle")

   269

	M(W("HttpQueryInfo"))

   270

	M("");

   271

#undef W

   272

#undef M

   273

   274

static WinInetProcs _wininet;

   275

   276

static const TCHAR *SubmitCrashReport(HWND wnd, void *msg, size_t msglen, const TCHAR *arg)

   277

{

   278

	HINTERNET inet, conn, http;

   279

	const TCHAR *err = NULL;

   280

	DWORD code, len;

   281

	static TCHAR buf[100];

   282

	TCHAR buff[100];

   283

   284

	if (_wininet.InternetOpen == NULL && !LoadLibraryList((Function*)&_wininet, wininet_files)) return _T("can't load wininet.dll");

   285

   286

	inet = _wininet.InternetOpen(_T("OTTD"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 );

   287

	if (inet == NULL) { err = _T("internetopen failed"); goto error1; }

   288

   289

	conn = _wininet.InternetConnect(inet, _T("www.openttd.org"), INTERNET_DEFAULT_HTTP_PORT, _T(""), _T(""), INTERNET_SERVICE_HTTP, 0, 0);

   290

	if (conn == NULL) { err = _T("internetconnect failed"); goto error2; }

   291

   292

	_sntprintf(buff, lengthof(buff), _T("/crash.php?file=%s&ident=%d"), arg, _ident);

   293

   294

	http = _wininet.HttpOpenRequest(conn, _T("POST"), buff, NULL, NULL, NULL, INTERNET_FLAG_NO_CACHE_WRITE , 0);

   295

	if (http == NULL) { err = _T("httpopenrequest failed"); goto error3; }

   296

   297

	if (!_wininet.HttpSendRequest(http, _T("Content-type: application/binary"), -1, msg, (DWORD)msglen)) { err = _T("httpsendrequest failed"); goto error4; }

   298

   299

	len = sizeof(code);

   300

	if (!_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &code, &len, 0)) { err = _T("httpqueryinfo failed"); goto error4; }

   301

   302

	if (code != 200) {

   303

		int l = _sntprintf(buf, lengthof(buf), _T("Server said: %d "), code);

   304

		len = sizeof(buf) - l;

   305

		_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_TEXT, buf + l, &len, 0);

   306

		err = buf;

   307

	}

   308

   309

error4:

   310

	_wininet.InternetCloseHandle(http);

   311

error3:

   312

	_wininet.InternetCloseHandle(conn);

   313

error2:

   314

	_wininet.InternetCloseHandle(inet);

   315

error1:

   316

	return err;

   317

}

   318

   319

static void SubmitFile(HWND wnd, const TCHAR *file)

   320

{

   321

	HANDLE h;

   322

	unsigned long size;

   323

	unsigned long read;

   324

	void *mem;

   325

   326

	h = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);

   327

	if (h == NULL) return;

   328

   329

	size = GetFileSize(h, NULL);

   330

	if (size > 500000) goto error1;

   331

   332

	mem = MallocT<byte>(size);

   333

	if (mem == NULL) goto error1;

   334

   335

	if (!ReadFile(h, mem, size, &read, NULL) || read != size) goto error2;

   336

   337

	SubmitCrashReport(wnd, mem, size, file);

   338

   339

error2:

   340

	free(mem);

   341

error1:

   342

	CloseHandle(h);

   343

}

   344

   345

#endif /* Disabled crash-submit procedures */

   346

   347

static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") };

   348

   349

static void SetWndSize(HWND wnd, int mode)

   350

{

   351

	RECT r, r2;

   352

	int offs;

   353

   354

	GetWindowRect(wnd, &r);

   355

   356

	SetDlgItemText(wnd, 15, _expand_texts[mode == 1]);

   357

   358

	if (mode >= 0) {

   359

		GetWindowRect(GetDlgItem(wnd, 11), &r2);

   360

		offs = r2.bottom - r2.top + 10;

   361

		if (!mode) offs = -offs;

   362

		SetWindowPos(wnd, HWND_TOPMOST, 0, 0,

   363

			r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);

   364

	} else {

   365

		SetWindowPos(wnd, HWND_TOPMOST,

   366

			(GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2,

   367

			(GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2,

   368

			0, 0, SWP_NOSIZE);

   369

	}

   370

}

   371

   372

static bool DoEmergencySave(HWND wnd)

   373

{

   374

	bool b = false;

   375

   376

	EnableWindow(GetDlgItem(wnd, 13), FALSE);

   377

	_did_emerg_save = true;

   378

	__try {

   379

		b = EmergencySave();

   380

	} __except (1) {}

   381

	return b;

   382

}

   383

   384

static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)

   385

{

   386

	switch (msg) {

   387

		case WM_INITDIALOG: {

   388

#if defined(UNICODE)

   389

			/* We need to put the crash-log in a seperate buffer because the default

   390

			 * buffer in MB_TO_WIDE is not large enough (512 chars) */

   391

			wchar_t crash_msgW[8096];

   392

#endif

   393

			SetDlgItemText(wnd, 10, _crash_desc);

   394

			SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(_crash_msg, crash_msgW, lengthof(crash_msgW)));

   395

			SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);

   396

			SetWndSize(wnd, -1);

   397

		} return TRUE;

   398

		case WM_COMMAND:

   399

			switch (wParam) {

   400

				case 12: /* Close */

   401

					ExitProcess(0);

   402

				case 13: /* Emergency save */

   403

					if (DoEmergencySave(wnd)) {

   404

						MessageBox(wnd, _save_succeeded, _T("Save successful"), MB_ICONINFORMATION);

   405

					} else {

   406

						MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);

   407

					}

   408

					break;

   409

/* Disable the crash-save submit code as it's not used */

   410

#if 0

   411

				case 14: { /* Submit crash report */

   412

					const TCHAR *s;

   413

   414

					SetCursor(LoadCursor(NULL, IDC_WAIT));

   415

   416

					s = SubmitCrashReport(wnd, _crash_msg, strlen(_crash_msg), _T(""));

   417

					if (s != NULL) {

   418

						MessageBox(wnd, s, _T("Error"), MB_ICONSTOP);

   419

						break;

   420

					}

   421

   422

					// try to submit emergency savegame

   423

					if (_did_emerg_save || DoEmergencySave(wnd)) SubmitFile(wnd, _T("crash.sav"));

   424

   425

					// try to submit the autosaved game

   426

					if (_opt.autosave) {

   427

						TCHAR buf[40];

   428

						_sntprintf(buf, lengthof(buf), _T("autosave%d.sav"), (_autosave_ctr - 1) & 3);

   429

						SubmitFile(wnd, buf);

   430

					}

   431

					EnableWindow(GetDlgItem(wnd, 14), FALSE);

   432

					SetCursor(LoadCursor(NULL, IDC_ARROW));

   433

					MessageBox(wnd, _T("Crash report submitted. Thank you."), _T("Crash Report"), MB_ICONINFORMATION);

   434

				} break;

   435

#endif /* Disabled crash-submit procedures */

   436

				case 15: /* Expand window to show crash-message */

   437

					_expanded ^= 1;

   438

					SetWndSize(wnd, _expanded);

   439

					break;

   440

			}

   441

			return TRUE;

   442

		case WM_CLOSE: ExitProcess(0);

   443

	}

   444

   445

	return FALSE;

   446

}

   447

   448

static void Handler2()

   449

{

   450

	ShowCursor(TRUE);

   451

	ShowWindow(GetActiveWindow(), FALSE);

   452

	DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);

   453

}

   454

   455

extern bool CloseConsoleLogIfActive();

   456

   457

static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)

   458

{

   459

	char *output;

   460

	static bool had_exception = false;

   461

   462

	if (had_exception) ExitProcess(0);

   463

	had_exception = true;

   464

   465

	_ident = GetTickCount(); // something pretty unique

   466

   467

	MakeCRCTable((uint32*)alloca(256 * sizeof(uint32)));

   468

	_crash_msg = output = (char*)LocalAlloc(LMEM_FIXED, 8192);

   469

   470

	{

   471

		SYSTEMTIME time;

   472

		GetLocalTime(&time);

   473

		output += sprintf(output,

   474

			"*** OpenTTD Crash Report ***\r\n"

   475

			"Date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n"

   476

			"Build: %s built on " __DATE__ " " __TIME__ "\r\n",

   477

			time.wYear,

   478

			time.wMonth,

   479

			time.wDay,

   480

			time.wHour,

   481

			time.wMinute,

   482

			time.wSecond,

   483

			_openttd_revision

   484

		);

   485

	}

   486

   487

	if (_exception_string)

   488

		output += sprintf(output, "Reason: %s\r\n", _exception_string);

   489

   490

#ifdef _M_AMD64

   491

	output += sprintf(output, "Exception %.8X at %.16IX\r\n"

   492

		"Registers:\r\n"

   493

		"RAX: %.16llX RBX: %.16llX RCX: %.16llX RDX: %.16llX\r\n"

   494

		"RSI: %.16llX RDI: %.16llX RBP: %.16llX RSP: %.16llX\r\n"

   495

		"R8:  %.16llX R9:  %.16llX R10: %.16llX R11: %.16llX\r\n"

   496

		"R12: %.16llX R13: %.16llX R14: %.16llX R15: %.16llX\r\n"

   497